Internal-combustion engine.



H. J. BACHMAN. INTERNALCOMBUSTION ENGINE.

APPLICATION FILED NOV. 12. l9l3.

Patented Oct. 5, 1915. 7

WITNESSES.-

IA'VENTOR. /i J 5676/7070 nose 3". Montana, or nnnvnn, coLonnno.

'mrnnnancoiunusrron' meme.

To'all whom it may conceww I Be itknown that I, Huco J. BAonMeN, a

' citizen of the United States, residing at 744,687, filed in Denver, in the county ol Denver and State have invented certain new and 'uscful' Improvements in Internal-Combus- "tion Engines,

of Colorado,

of which the followingvis a specification. .j

This invention relates tointernal combustion'engines and more particularly to im' provements in-engines of the type shown in my application for patent, Serial Number the United States Patent Office, January 28, 1913.

Its object resides in providing a novel method'of jacketing the exhaust valve of the engine whereby to effectively insulate the contacting surfaces thereof from the detrimental influence of the heat radiating from the gases of combustion which when the engine runs at high speed, flow in a substan-' tially continuous stream through the valve.

In accordance with the present invention I provide one or more air spaces which are in continual communication with the atmos-.

phere and through which air is automati cally circulatedby the suction creating effect of the stream of gases flowing into the inte- 'riorof the valve through a bell-m0uthed nozzle at its extremity.

Anembodiment of my invention is 1llustrated in the accompanying drawings in the various views of which like 1 arts are similarly designated and in whic 1 Figure 1 represents a longitudinal section taken through an engine to which my invention is applied, with the piston and valves shown in elevation, Fig. 2, an en- 7 larged sectional view of. the exhaust valve of the engine,'and adjacent parts of the working cylinder and valve cylinder of the same, Fig. 3, a section similar to that shown in Fig. 2 with the exhaust valve in' the position in which itu'ncovers the exhaust working cylinder of the engine which is open at one ofits ends and in which aport of the cylinder for the escape of gases of combustion therefi'om, and F g. I 4, a transverse section taken along the line 44.-, Fig. '3.

Referring more specilically to the drawings, the reference numeral 2 designates the trunk-piston 3 is fitted for reciprocation. I

Formed with the cylinder 2, is the valve-cylinder 4: trawl-dial! an intake valve 5 and an exhaust Specification, of. Letters Patent.

Application filer} November 12, 1913.

' furthermore provided with connects with the carbureter or other source "instrumentality' of has been shown in section in parts. of the engine,

" integrally and axially parallel Serial No. 800,569. 1

valve 6 'are slidably fitted in tandem rela tlon to each other, the two cylinders being spaced from each other and surrounded by an integral mantle to provide a jacket which completely'inclo'ses the same.

The two cylinders are connected by an intake port 7 and an exhaust port 8' through whlch the motive fluid is admitted into and discharged from the compression end of the working cylinder, and the valve cylinder is of combustible mixture. a

The piston3 is by means of a connecting rod 12, operatively connected with the crank arm of a crank shaft 13 which through the a pair of gear wheels 14 and 15 proportioned at a ratio of one to two,

vimparts its rotary motion at alreduced rate of speed to a second shaft'16.

The rotary movement of the last-mentioned shaft-is converted into independent "reciprocating movements of the two valves by means of GCCBIltIlCS I'T which are placed at right angles to each other and whose rods are 'articulately connected with the valve rods; I 4 V v The rod of the intake valve is bored -longi tudinally for the sliding movement of'the rod of the other .valve within the same, both rods being guided in their reciprocating mg part of the fi-present invention-has not been shown in detail in the drawings.

Securely mounted upon the circumferential flanged, -open exhaust end of thevalve cylinder is a hollow cylindrical. element 18 which forms an extension of the said cylinder and which provides a connection be tween the latter and. the exhaust pipe 19 which is rigidly secured upon its outer ex tremity.

-Theexhaustfvalve which like the other Valve is of the piston type, consists of a'cy lindrical shell ner endhas a port 20 which when the valve is at or near theend of its outward stroke, registers with the exhaust port 8 for the es- Patented ea. 5, i915 which adjacent its closed ina port 9 which v the exhaust port includes a hollow cape of the gases of combustion from the cylinder 2.

An axially, inwardly extending, bellmouthed nozzle 21 formed integrally with the cylindrical shell of the valve 6 provides tapering passage through which the gases admitted through the port 20 are conducted in their course to the exhaust conduit.

The element 18, the body portion oi which is disposed between the valve cylinder and cylindri cal core 2:2 of reduced diameter which being formed integral with the said body portion, extends from the inner surface thereof, axially within the hollow exhaust valve in concentric and spaced relation to its circumferential wall. .The lower end of. the core has a slightly reduced mouth. adapted to receive the end of the nozzle 2-1 on the valve when the latter reaches the end of its outward stroke at which the opening 20 is in register with the exhaust port 8 of the working cylinder as shown in Fig; 3.

A mantle23 integrally connected with the core by, means ofspacing lugs 21, provides a jacket around the same, the said mantle being open' 'at both its ends and formed at its lower. extremity to permit of the free passage bf the valve nozzle as it enters the mouth of the core.

The element 18 is furthermore provided with a plurality of openings 25 which being formed between the point of its connection with the valve cylinder and the point at which the outer end of its core joins its in terior.surfaceconnect the annularspace between the inner surt'ace of the valve shell and the'niantle of the core, as well as the jacketformed by said mantle with the atmosphere.

The valve G has in a plane with its port '20, a number of openings 26 through which the gases fimv into the balance chainber 10 for the purpose of equalizing their pressure upon the inner and outer surfaces of the. valve/to prevent its binding in the cylinder, and 'pabhing rings 27 are applied in exterior recesses of the valve shell for the usual purpose.

\Vheriln the cycle of operations of the engine the exhaust valve is moved outwardl 'v for the escape of the gases of combustion after the charge of explosive mixture has been ignited in the compression end of the working cylinder and the piston is thereby driven outwardly to effect a rotary moveinent of the crank shaft, the opening 20 having been brought in register with the eX haust port 8, causes the gases of combustion developed in the working cylinder to enter the nozzle 21 which forcibly ejects them into the mouth of the core pass to the exhaust conduit.

The rapid flow of the gases through the contracted end of the nozzle creates a partial through which they aces vacuum which draws air through the open ings into the two ackets formed between the inner surtace of the valve shell and the core, to be discharged therefrom through the spaces between the nozzle and the mouths of the mantle and the core, into the interior of the latter.

From the foregoing it will be seen that the flow of gases between the exhaust port of the cylinder 2 and the exhaust pipe 19 causes a continuous circulatory movement of air through the valve to cool its shell and prevent its being aii'ected by the intense heat of the gases which in the ordinary operatiiin ot' the engine flow through its interior in a substantially continuous stream.

Having thus described my invention what I claim and desire toscc-ure by Letter-sidetent is: i

E. In an internal combustion engine, a working cylinder and a valve chamber connected by a port, a hollow alve movably mounted in the said chamber, and having an inwardly directed nozzle and opening for establishing communication between the said nozzle and the said port, and an element providing a passage for gases ejected from the said nozzle through the interior of the valve, in spaced relation to the wall of the same, the said space connecting with the atmosphere and with the mouth of said pas sage adjacent said nozzle.

2. In an internal combustion engine, a workingv cylinder and a valve chamber connected by a port, a hollow valve movably mounted in the said chamber, and havingan inwardly directed nozzle and an opening for establishing cornmunlcation between the said nozzle and the said port, and an ele-- ment providing a jacketed passage for gases ejected from the said nozzle, through the interior or the valve in spaced relation to the wall of the same, the said space connecting with the atmosphere and with the mouth of said passa adjacent said nozzle.

In an internal combustion engine, a working cylinder and awalve chamber connected by a port, a hollow valve movably mounted in the said chamber, and having an inwardlydirected nozzle and an opening for establishing communication between the said nozzle and the said port, an element providing a passage for gases ejected from the said nozzle, through the interior of the valve in spaced relation to the wall of the same, and including a mantle forming an open-ei'ided jacket around said passage,both the said space and ing with the atmosphere and with the mouth of said passage adjacent said nozzle.

the said jacket connect 4. In an internal combustion engine, a

' said nozzle and the said port, and an element including-an open-ended hollow core for establishing communication between the extending within the valve in spaced relation tothe interior surface of the same, and

means for connecting said space with the atmosphere, the said core being adapted to receive at its inner end, the gases ejected through said nozzle and the said space being connected with the same end'of the core for the admission of air thereinto.

In an internal combustion engine, a working cylinder and a valve-cylinder connected by a port, a. hollow valve movably fitted insaid valve cylinder and having an inwardly directed nozzle and an opening for.

establishing conununicationlbetween the said nozzle and the said port, and an element including an open-ended jacketed hollow core extending within thevalve in spaced relation to the interior surface of the same, and means for connecting said space with the atmosphere, the said coi-e being adapted to receive at its inner end, the gases ejected through said nozzle and the said space being connected with the same end of the core for the admission of air thereinto.

-6. In an internal combustion engine, a

working cylinder and a. valve-cylinder connected by aport, a hollow valve movably fitted in said valve cylinder and having an inwardly directed nozzle and an opening for establishing communication between the said nozzle and the said port, and an ele ment including an open-ended hollow core extending within thevalve in spaced relation to the interior surface of the same, a

mantle forming an open-ended jacketaround said core, and means for connecting said space and said jacket 'ltll, the atmosphere, thesaid core being adapted to receive at its inner end," the gases ejected through said nozzle, and the said space and the said jacket being-both connected with the same end of the core for the admission of air thereinto.

7. In an internal combustion engine, a working cylinder and a valve cylinder connected by a port, a hollow valve movably fitted in said valve cylinder and having an said conduit, having an air-inlet, a hollow valve controlling the flow .of gases through the said connection, and means in said connection, for causing by the flow of gases through the same a current of air to enter the connection through its said inlet and pass along the interior surface of the valve,

to a determinate point of discharge.

9. In an internal combustion engine, a cylinder having an exhaust port, an exhaust conduit, a connection between said port. and

said conduit, having an air-inlet, a hollow valve controlling the flow of gases through the said connection, and means in said connection, for causing by the flow ofgases through the same, a current of air to enter the connection through its said inlet and pass along the interior surface of the valve into the exhaust-conduit.

10. In an internal combustion engine, a cylinder having an exhaust port, an exhaust conduit, a connection between said port and said conduit, having an air-inlet in direct communication with the atmosphere, a valve controlling the flow of gases through said connection, and means in said connection for causing, by a flow of gases through the same, a current of air to enter the connection through its said inlet and pass along a surface of the valve to a determinate point of discharge. I r

In testimony whereof I have afiixed my signature in presence of two witnesses.

HUGO J. BACHMAN. lVitnesses:

G. J. ROLLANDET, L. RHoADE's. 

